Sawing-machine.



S. KOONS.

SAWING MACHINE.

urmonxon rum 3.12,- 1909.

Patented Nov. 5, 1912.

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sfxooNs. SAWING MACHINE.

APPLIOATIOI FILED IAB.. 12, 1909. y I 1,043,775. Patented Nov. A5, 1912.

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UMTED STATES .PATENT OFFICE.

SIDNEY KVOONS, F NEAR ALEXIS, ILLINOIS, ASSIGNOB T0 CHARLES L. HIBBARD, 0F KANSAS CITY, MISSOURI, AND CLARK HIBBARD, 0F GALESBUBG, ILLINOIS.

SAWING-MACHINE.

Specification of Letters Patent.

Patented Nov. 5, 1912.

" To allwlwmitmay corwem a specification.

My inventiony lhas relation to portable sawing machines, and particularly to a class or type thereof which may be employed forv fellin trees and for cutting them into suitable Iengths after such felling operation. It will be evident, however, that some of my improvements are equally applicable to stationary saws.

One of the primary objects of the invention is to provide an eccentrically actuated blade, whereby the teeth thereof when on the return movement do not drag over the plane surface cut by the forward movement of the saw, but contact only an angular piece thereof, whereby the -friction is great lessened.

A further object accompllshed y providing means whereby the blade is eccentrically actuated is that the cut or incision being downwardly and forwardly inclined, lcomparatively all the sawdust will be carried by the teeth in that direction and free from said incision, and the bottom of the incision will be clear and free thereof and the saw teeth will come directly in contact with the uncut wood. Other objects of the inventionconsist in novel structural features and combinations of devices, the operation of which devices willbe found hereinafter fully described and the novel combinations of which will be pointed out in the appended claims.

\ of the vertical one shown, and that when in device com lete and as in operation; Fig. 2,l

an enlarge detail; Fig. 3, a sectional view taken in the Vline 3 3' in Fig. 2;` Fig. 4, a

'detail' Fig. 5, a sectional v1ew, partly in elevation, taken in the line 5--5 in'Fig'. 4';

osition a horizontal cut will be made nd Fig. j, an end elevatiompartly in sec'- `Like letters and numerals denote like parts in all the views.

A indicates any suitable motor, shown here as an ordinary type of gasolene engine. As above stated, the motor may be of any other type as, for instance, a horsepower, and needs no further description herein except. in a few brief particulars.

Flxed on an axle 2 supported on wheels 1 are longitudinal frame-bars 3.

B indicates a A{1y-wheel driven from the engine or other source of energy.

A is a cranking lever, adapted to start the engine in a well known manner.

Fixed on a shaft 17 and driven by the wheel B is a cog wheel 18, the cogs of which mesh with those of a larger wheel 8 fixed on a shaft 12 which carries also an eccentric 7 provided with flanges 9 and fixed to an arm 10, the outer end of the latter pivotally engaged with one end of a connecting rod 11, the other end of which is pivotally connected by a bolt 14 with a track-block or runner 2O riveted at 21 to the saw-blade 13.

15 indicates the track or guide on or against which the saw ismou'nted, and comprises an elongated U-shaped struct-ure, the forward portion of which is composed of L-shaped bars 16 spaced and braced by plates 19 bolted thereto on the distant side.

thereof. A guide wheel 22 journaled on a shaft 23 mounted in bearings in the upper track rail 16 is provided with flanges 24 (Fig. 5) which stride the back edge of the saw 13 and prevent lateral movements thereof. Although the saw is normally lheld in the incision 1n the log 25 by gravity, should it be desirable to add force, the operator may so do by pressing downwardly on the handle 26 mounted on the shaft 23. The handle may also be employed to raise the saw out of the cut, and to hold it in elevated position when it is desirable to transport it locally, in which latter event the springactuated catch 27, pivoted on the frame-bar, may be thrown rearwardly and the'point of the shaft 23 rested thereon. A swinging arm 29 pivoted at its upper end on the shaft 23 and at its lower end secured to a traveler-block 30 resting against the face of the saw serves to keep the latter in proper working position.

As .the gear above described actuates the arm 10 and rod 11, the former will impart movement to the eccentric,`which, turning within the track 16 will impart rising an falling movements to the rear end thereof and thereby the saw, and the rod will impart longitudinal reciprocating movements to said saw. t

It will be evident from an inspection of Figs. 1 and 2 that the distance from the shaft 12 to the outer end of the crank-arm 10 is greater thanl the distance from said shaft to the curved portion of the track 15, and that, therefore, the throw of the rod 11 and therebyT the longitudinal movement of the saw will be greater than that of the track, inasmuch as the latter is restrained from as great forward movement by said portion by said curved portionstriking against the eccentric 7. It is' necessary, therefore, to provide means for guiding the saw within or between the track members 16, and this means is supplied in the block 20 which reciprocates therebetween and to which block the saw is secured.

Having thus described my invention, I claim as new and desire to secure by Letters Patent the following, to wit:-

1. In a sawing machine, in combination, a supporting frame, an eccentric, a connecting-rod, means whereby said eccentric actuates said rod, a saw-guide comprising spaced tracks between andin the plane of which said eccentric lies, and actuable thereby, and a saw in engagement with and actuable by said rod.

2. In a sawing machine, in combination, a supporting frame, an eccentric, a connecting-rod, means for actuating said eccentric, means whereby ,said eccentric actuates said rod, a saw-guide comprising spaced tracks between and in the plane of which said eccentric lies, and actuable thereby, a block in pivotal engagement with said rod, and a saw-blade actuable by said block.

3. In a sawing machine, in combination, a supporting frame, an eccentric, a connecting-rod, means whereby said eccentric imparts movement to said rod, means for actuating said eccentric and thereby said rod, a saw actuable longitudinally by said rod, and

a guide in which said saw has longitudinally reciprocating movements, said guide comprising spaced tracks between and in the plane of which said eccentric lies and from which eccentric its rear end is adapted to receivel vertically reciprocating movements.

4. In a sawing machine, in combination, a supporting frame, an eccentric, a connecting-rod, means whereby said eccentric imparts movement to said rod, a saw-guide comprising spaced tracks between and in the plane of which said eccentric lies, said guide supported at its rear end by said eccentric and adapted to receive vertically reciprocating movements therefrom, a saw adapted to travel in said track and to receive endwise reciprocating movements from said rod,A and means whereby the saw may be held forcibly in contact with the object on which it is operating.

t 5. In a sawing machine, in combination, a supportingframe, an eccentric, a connecting-rod, means whereby said eccentric imparts movement to said rod, a saw-guide comprising spaced tracks between and in the plane of which said eccentric lies, said guide supported at its rear end by said eccentric and adapted to receive vertically reciprocating movements therefrom, a saw adapted to travel in said track and to receive endwisereciprocating movements from said rod, and means for sustaining the forwardv portion of the saw above the ground when not in use.

6. In a sawing machine, in combination, supporting means, an eccentric, an eccentric arm, a rod actuated thereby, a U-shaped track supported on said eccentric, a guldeblock mounted therein and actuable by said rod, and a saw actuable by said guide-block.

7. In a sawing machine, in combination, supporting means, an eccentric, an eccentric arm fixed thereto, a rod actuated thereby, a U-shaped track supported on said eccentric, a track-block mounted therein and actuable by said rod, a saw actuable by said block, a shaft mo-unted in one of the track-rails, and a flanged guide-wheel mounted thereon and adapted to stride the back of the saw. 8. In a sawing machine, in combination, supporting` means, an eccentric, an eccentric arm xed thereto, a rod actuated thereby, a U-shaped track supported on said eccentric, a track-block mounted therein and actuable by said rod, a saw actuable by said block, a shaft mounted in one of the track rails, a flanged guide-wheel mounted on-said shaft and adapted to stride the back edge of the saw, a swinging arm mounted on said shaft, and a traveler block secured to said swinging arm and adapted to engage one of the faces of the saw.

In testimony that I claim the foregoing as my invent-ion I hereby subscribe my name in presence of two witnesses.

SIDNEY KOONS.

Witnesses:

HERBERT L. MILLER, H. M. RICHARDS. 

